Bifuel carbureter.



G. F. BISCHOF. BIPUEL CARBURETER. APPLIGATION FILED 00126, 1912.

1,085,239. Patented Jan. 27, 1914.

maval@ GEORGE F. BISGHOF, 0F ROCHESTER, PENNSYLVANIA.

BIFUEL CARBURTER.

Specieation of Letters Patent.

Patented Jan. 27, 1914.

Application led October 26, 1912. Serial No. 721995.

vTo all whom t may concern:

Be it known that I, GEORGE F. BIsCHoF, a citizen of the United States, residing at Rochester, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Bifuel Carbureters, of which the following is a speciiication, reference being had to the accompanying drawings.

The present invention relates to new and useful improvements in bi-fuel carbureters, and has for its rimary object to provide a carbureter whic ermits the utilization of both gasolene and erosene and also provides means whereby the fuels will be thoroughly mixed with the air or vaporized before directing the same to the cylinders.

Another object of the invention resides in the revision of the air passages with which t e outlet ports of the fuel supply chambers directly communicate whereby the oil is carried in suspension by the air and discharged in a finely divided state from the spraying nozzles Within the carbureting chamber, and additional suction controlled valves mounted in the wall of said chamber whereby the supply of air to said chamber is automatically increased proportionately to the increase in the fuel supply yas the speed of the engine increases, thus insuring a thorough admixture of the air and fuel in proper proportions so that the fuel will be completely vaporized prior to its entrance into the explosion chambers of the engine cylinders.

A further object of the present invention is to provide means for regulating the flow of the fuel to the carbureting chamber whereby the operator may when starting theengine use gasolene and when increasing the speed of the engine the kerosene may be admitted to the carbureting chamber in proportions decided by the respective areas of the two nozzles.

Further objects will be readily apparent hereinafter as the description continues.

With the above and other objects in view the invention consists of the novel details of construction, combination, formation and arrangement of parts as will be hereinafter more fully described, claimed and particularly pointed out in the accompanying drawings in which- Figure 1 is a plan view embodying my invention, Fig. 2 is a vertical horizontal section of the same, Fig. 3 is a detail horizontal section. Fig. 4 is a detail section of one of the additional airl supply valves mounted upon the casing of the carbureter. 'Fig 5 is a side elevation of the lower end portion of the casing or cylinder of the carbureter.

Reference now being had to the accompanying drawings wherein like `rand corresponding parts are designated by similar reference characters throughout the several views the numeral l indicates a tubular casing having a carbureting chamber 2 formed therein in which is pivotally mountedthe usual butterfly throttle valve 8. The upper extremity of the casing 1 is provided with an annular flange-4 whereby the same may be detachably secured to the intake manifold of an internal combustion engine.

Secured upon the diametrically opposite sides of the casing'l and in communication therewith are a pair of storage tanks A and B for the reception of the kerosene and gasolene respectively. The gasolene supply tank comprises a cylindrical casing 5 having formed therein a chamber 6 for the reception of the gasolene and the upper end of the chamber is adapted to be closed by means of a cover 7. Leading-to the chamber 6 is a main inlet port 8 being in communication with a suitable supply of gasolene `and mounted within the chamber 6 is a float 9 being operatively connected to a needle valve 11 by means of a lever 10 whereby the iow of gasolene to the chamber will be regulated yin the usual manner.

The kerosene supply tank A is' of substantiallythe same construction as that of the gasolene supply chamber B and therefore a detail description of the same is deemed unnecessary. Extending down one side of each of the chambers of the gasolene and kerosene supply tanks and then diametrically across the bottom thereof areair inlet tubes 12. One end of each of these tubes is threaded .as at 13 and adapted to be secured to the opposite sides of the casing 1 and in communication with the carbureting chamber. Formed within the bottom of each of the supply chambers is an opening 14 which is adapted to permit the fuel to iiow from the chambers into the tubes 12 and the said tubes each are provided with an adjustable needle valve 15 whereby the flow of fuel from the chambers may bev controlled. These tubes each are also provided with a removable plug 16 whereby the sediment or foreign matter co1- mounted within each of the tubes 12 are L` shaped spraying nozzles 17 and 17 whereby the gasolene and kerosene respectively may -be discharged within the mixing chamber 2.

It is obvious from the foregoing that when the fuel from the chambers is directed to the spraying nozzles the same will be mixed with a suitable supply of air coming through the tubes 12 so that the air will strike the fuel entering from the respective supply chambers through the orifices 14 into the passages 12 and carry the same in suspension to the spraying nozzles from which the sameis discharged in a finely comminuted state into the carbureting chamber. A

Adjustably mounted within the lower eX- treinit-y of the casing 1 is a. threaded plug 18 having formed therein adjacent its marginal edges a plurality of segmental slots 19. These slots19 permit the flow of air into the mixing chamber but are adapted to be controlled, by a valve plate 2O rotatably mounted upon the plug 18 within the casing 1 and having openings 21 formed therein which are adapted to register with the openings 19. The medial portion of this plug 18 is provided with an opening 18. which' is adapted to be automatically closed by me'ans of a spring 22 which normally holds the valve plate 20 in engagement with the upper face of the plug 18. Upon the increased speed of the engine the suction caused within the chamber 2 will cause the valve 20 to openand thereby allow a larger quantity of Y air to enter the chamber 2.

rlhe plate 20 is provided upon its periphery with asuitable handle 20 which is` disposed through an opening 28in the wallA of the casing 1.

Spaced tongues 29 are formed upon the loweredge of'this opening, the extremities of said tongues being may, however, be rea spaced from the upper edge ofsaid opening so that the upper portion of the opening 28 constitutes a circumferential slot 30. The

handle 20 is normally disposed between the lower'ends of adjacentto/gues 29 so as to prevent angular movement of the valve plate from its adjusted osition. `This plate y lifted by suction from its `seat by action of thfe spring 22', as

above explained. The opening 28' 1n the casing is substantially equivalent in length to the length of the segmental-ports 19, and in order to prevent admission of air into the carbureter chamber through this opening when the valve; plate is lifted from its seat, I provide a curved upstanding plate 31 which is secured to the periphery of the valve plate 2O and has close frictlonal en gagement with the inner surface of the valve casing 1 over the opening 28. It will thus be apparent that when the valve is disposed upon its seat, air cannot enter through said opening. An additional intake port is carried by the casing 1 and in communication.

with the chamber 2. v This intake port 23 is provided with a spring actuated valve 24 whereby upon the increased speed of the engine a larger quantity of air may enter the carbureting chamber 2.

To provide means for regulating the iiow of fuel from the chambers to the auxiliary air inlet ports I secure upon the lower eX tremities of the needlevalves beveled gears f 25 which are in mesh with beveled gears 26 carried by controlling shafts 27. These controlling shafts 27 are in the available use of the operator whereby the valves may be singly or jointly .operated to permit the gasolene and kerosene to be directed to the carbureting chamber of the carbureter.

lVhile from the above I have described and shown the specific embodiment of the present invention it is of course to be under stood that other minor'details as to changes,

formation, alteration and modification may be resorted to that come within the scope of the. present invention without departing ffrom the'spirit thereof or sacrificing the eiii-` ciency of the same.

What I claim is:

, In a carbureter, a casing provided with a c/arbureting chamber, fuel supply7 tankseach provided with an air passage opening at one of its ends into the carbureting chamber, valves located in the respective passages to control the supply of fuel thereto, spraying nozzles located within the carbureting chamberand connected to the respective passages, a. valve removably mounted 1n one end of said casing to supply air at all times to the carbureting chamber, said valve including a suction cont-rolled adjustable valve plate whereby the normal'supply of air to the carbureting chamber may be regulated, an increase in the speed of the engine lifting the valve plate fromf/its seat by suction to increase the supplyf-of air to the chamber, and an additional-"suction controlled valve mounted in the wall' of said casing and'automatically opened upon a further increase of the engine 'speed to supply additional air to the carbureting chamber.

In testimony whereof I hereunto aiiix my signature in the presence of two Witnesses.

' GEORGE F. BrscHoF.

Witnesses: I

LEMAN WDOLBY, Animar SULsER. 

